D14635.03—MAY 2010
11
TANDBERG Codec C90 and Profiles using C90
Administrator guide
Contents
Introduction
Advanced configuration
Password protection
About monitors
Audio matters
Appendices
Contact us
www.tandberg.com
Audio Input Line [1..4] Level
Define the audio level of the Line input connector, in steps of 1dB.
See the Audio Level tables in the Physical Interfaces Guide for the codec for a complete overview of the
menu values represented in dB.
Value space: <0..24>
Range:
Select a value from 0 to 24dB.
Example:
Audio
Input Line 1 Level: 10
Audio Input Line [1..4] LoopSuppression
The loop suppression functionality detects whether a delayed signal loop is present from an audio Line
output to an audio Line input on the codec. If a loop is detected the unwanted feedback is suppressed.
NOTE! Only loops between line output 3 and line input 3, and between line output 4 and line input 4 are
suppressible.
Value space: <On/Off>
On:
Activate Loop Suppression.
Off:
Deactivate Loop Suppression.
Example:
Audio
Input Line 3 LoopSuppression: On
Audio Input Line [1..4] Mode
Set the audio input line mode.
Value space: <On/Off>
On:
Enable the Audio Line input.
Off:
Disable the Audio Line input.
Example:
Audio
Input Line 1 Mode: On
Audio Input Microphone [1..8] EchoControl Mode
The echo canceller continuously adjusts itself to the audio characteristics of the room and compensate for
any changes it detects in the audio environment. If the changes in the audio conditions are very significant
the echo canceller may take a second or two to re-adjust.
Value space: <On/Off>
On:
Echo Control is normally set to On to prevent the far end from hearing their own audio. Once
selected, echo cancellation is active at all times.
Off:
Echo Control should be switched Off if an external echo cancellation or playback equipment is
used.
Example:
Audio
Input Microphone 1 EchoControl Mode: On
Audio Input Microphone [1..8] EchoControl NoiseReduction
The system has a built-in noise reduction which reduces constant background noise (e.g. noise from
air-conditioning systems, cooling fans etc.). In addition, a high pass filter (Humfilter) reduces very low
frequency noise. NOTE! Requires the Echo Control Mode to be enabled for the microphone.
Value space: <On/Off>
On:
The Noise Reduction should be enabled in the presence of low frequency noise.
Off:
Turn off the Noise Reduction.
Example:
Audio
Input Microphone 1 EchoControl NoiseReduction: On
Audio Input Microphone [1..8] Equalizer ID
Select the audio input microphone equalizer ID.
Value space: <1..8>
Range:
Select EqualizerID 1 to 8.
Example:
Audio
Input Microphone 1 Equalizer ID: 1
Audio Input Microphone [1..8] Equalizer Mode
Set the audio input microphone equalizer mode.
Value space: <On/Off>
On:
Enable the equalizer for the audio input microphone.
Off:
No equalizer.
Example:
Audio
Input Microphone 1 Equalizer Mode: Off
Audio Input Microphone [1..8] VideoAssociation MuteOnInactiveVideo
Enable association of a video source to a microphone audio input.
Value space: <On/Off>
On:
A video source is associated, and the audio will be muted if the associated video source is not
displayed.
Off:
No video source is associated.
Example:
Audio
Input Microphone 1 VideoAssociation MuteOnInactiveVideo: On
Audio Input Microphone [1..8] VideoAssociation VideoInputSource
Select the associated video input source.
Value space: <1/2/3/4/5>
Range:
Select one of the five video input sources.
Example:
Audio
Input Microphone 1 VideoAssociation VideoInputSource: 1
The Audio settings,
cont...
The Audio settings,
cont...
